Shoe conveyer jack



July so, 1940.

A. A. sTElNHILBl-:R 2,209,425

sHoE coNvEYER JACK Filed July 10, 1959 Patented July 30, 1940 UNITED SHOE- CDNVEYER JACK Adolph A. Steinhilber, Rock Island1li., assigner to The Servus Rubber Co., Rock Island, Ill., a corporation of Illinois y Application J'uly 10, 1939, Serial No. 283,516

4 Claims.

This invention relates to improvements in a jack to be used on a conveyer or making table for holding a last on which to place the parts to build up a shoe or boot.

The primary object of the invention is to provide a jack which may be readily adjusted into various inclined and rotatable positions to facilitate the performance of work by the operators.

Another object of the invention is to provide a jack capable of being moved into various convenient positions and which is constructed to hold such positions without the operation of levers or the like.

Various other objects and advantages of the invention will become apparent from a perusal of the specification and drawing.

In the drawing Fig. 1 represents a side elevation of a jack on which is mounted a last of ordinary construction. tional view on the line 2 2 of Fig. 1, and Fig. 3

is a top plan View of the device.

Referring further to the drawing, a dowel pin I suitable for insertion in a conveyer or making table supports the base 2. The base is provided with a cylindrical recess 3- in which is mounted a coil spring 4 surmounted by a washer 5 on which rests a bifurcated shank 6. secured to the base 2 by means of screws such as 8, engages an annular flange 9 at the base of the shank and retains the same within the cylindrical recess of the base plate. The shank 6 is rotatable within the recess of the base, being held against the collar 'I by the coil spring 4.

A pin IU passing through the legs II and I2 of the shank forms a pivotal support for a yoke I3, the latter being provided with a threaded cylindrical recess I4 into which is threaded an inverted cup I5 containing the flaring base I6 of the top part 4of the jack, surrounded by a tapered collar I'I and a spring pilot washer I8, against which presses the spring I9. The upper part of the jack comprises a circular member 2f] on which are mounted a pair of posts 2| and 22 suitable for receiving a shoe last having corresponding holes therein. Instead of' two posts one may be employed for certain types of lasts commonly mounted that way.

It will now be observed that the upper portion of the jack may be rotated within the cup I5 through an angle of 360 degrees, while the spring I 9 will hold it in any position in which it is left. Also the yoke I3 may be rotated about its horizontal axis, that is the pin I 0, and will be retained inany of a plurality of positions by means of a ball 23 which is designed to engage Fig. 2 is a vertical sec-k A collar 'I with any of the notches, such as 24, provided in the bottomsurface of the yoke, this ball being urged into such notches by means of a spring 25 which carries at its upper end a spring pilot washer 26. Fig. 1 shows that the yoke is provided with ve such notches. The operator who is working at this jack can tilt the jack until the lball 23 engages any of the iive notches, and the spring 25 will securely hold the jack at anysuch position.`

' In order that the spring pressure on the ball 23 may be varied I provide inthe dowel I a washer 2l and a screw which can be adjusted irom'belo-w through the aperture 29.

While the jack is vertical or so inclined, the last mounted on the jack may be rotated by rotating the flaring post I6 in the cup I5. Also while the jack is in any inclined or vertical position, it and the yoke held by shank 6 may be further rotated about a vertical axis in the recess 3.of the base member 2. All of these adjustments may be made without any manipulation of locking devices or levers. The entire jack will remain at any position in which the operator places it, inasmuch as all the springs employed have sui'lcient strength for that purpose,

hence the operator can continue his work of assembling the article of footwear without paying any attention to the matter of securing the jack at the desired positions which are most convenient during different operations.

In this specification and in the claims where reference is made to a boot jack the term should be considered as applicable to a jack for making any kind of footwear. Furthermore it will be appreciated that the invention is susceptible of some variation and modification, particularly where such modications and variations lremain within the scope of the appended claims.

Having shown and described my invention, I claim: 'A

1. A boot jack comprising a base and means for attaching the same to a conveyer or work table, said base having a cylindrical recess, a shank having a cylindrical portion lying in said recess, meansy for securing the shank to said base including a spring rarranged to allow relative rotation of the shank and base but frictionally retarding it, a yoke pivotally supported on the shank and having a. plurality of detents therein, a spring loaded member for engaging said detents to hold the yoke in any of several positions, means for regulating the spring pressure on said mem.- ber, an inverted cylindrical cup engaged with said yoke, a last supporting device extending into said cup and rotatable relatively thereto, and means including a spring for frictionally restraining rotation of said device in said cup.

2. A boot jack comprising a base and means for attaching the same to a conveyer or work table, said base having a cylindrical recess, a shank having a cylindrical portion lying in said recess, means for securing the shank to said base including a spring arranged to allow relative rotation of the shank and base but frictionally retarding it, the upper end portion of said shank being bifurcated, a yoke pivotally supported between the bifurcations of said shank and having a plurality of detents therein, a spring loaded member reciprocable longitudinally and centrally of said shank for engaging said detents to hold the yoke in any of several positions, a last supporting device and means for rotatably mounting the same on said yoke for rotation about a vertical axis.

3. A boot jack comprising a base having a cylindrical recess in its upper portion and a downwardly extending post for attaching the same to a conveyer or work table, a shank having a cylindrical portion lying in said recess, means for securing the shank to the base including a spring and arranged to frictionally retard rotation of the shank relatively to the base about a vertical axis, the upper end portion of the same being bifurcated, a yoke pivotally supported on a horizontal axis between the bifurcations of the shank and having a plurality of detents therein, a spring loaded member reciprocable longitudinally and centrally of the shank to engage said detents to hold the yoke in any of several positions, means extending centrally of the shank and post for adjusting the spring loading of said member, a last supporting device and means for rotatably mounting the same on said yoke co-axially with said rotatable shank.

4. A boot jack comprising a base having a cylindrical recess in its upper portion and a downwardly extending post for attaching the same to a conveyer or work table, a shank having a cylindrical portion lying in said recess, means for connecting the shank to the base for rotation relatively thereto about a vertical axis constructed to seal said recess against the entrance of dirt and including a spring for frictionally reta-rding said rotation, the upper end of said shank being bifurcated, a yoke pivotally supported on a horlzontal axis between said bifurcations and having a plurality of detents in its lower portion, a spring loaded member housed within said base and shank centrally thereof to engage said detents to hold the yoke in any of several positions, means extending centrally through said post*I for adjusting the spring loading of said member, a last supporting device and means for connecting the same to said yoke for rotation about a vertical axis including a spring for frictionally retarding said rotation and a housing to wholly enclose and seal said connection.

ADOLPH A. STEINHILBER. 

